Emergency stop button



FIG. 1 is a front, top, and right side perspective view of an emergency stop button;

FIG. 2 is a front, top, and left side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right side elevational view thereof, the a left side elevational view being a mirror image of the right side elevational view; and,

FIG. 6 is a bottom plan view thereof.

The portions of the article shown in broken lines is for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for an emergency stop button, as shown and described. 